#include <stdio.h>
struct{
    int year;
    int month;
    int day;
}date;
int main(){
    int days;
    printf("input year,month,day:");
    scanf("%d,%d,%d",&date.year,&date.month,&date.day);
    switch(date.month){
        case 1:days=date.day; 
        break;
        case 2:days=date.day+31;
        break;
        case 3:days=date.day+59;
        break;
        case 4:days=date.day+90;
        break;
        case 5:days=date.day+120;
        break;
        case 6:days=date.day+151;
        break;
        case 7:days=date.day+181;
        break;
        case 8:days=date.day+212;
        break;
        case 9:days=date.day+243;
        break;
        case 10:days=date.day+273;
        break;
        case 11:days=date.day+304;
        break;
        case 12:days=date.day+334;
        break;
    }
    if((date.year%4==0&&date.year%100!=0||date.year%400==0)&&date.month>=3){
        days+=1;
    }
    printf("%d/%d is the %dth day in %d.\n",date.month,date.day,days,date.year);
    return 0;
}